diff options
Diffstat (limited to 'ext/dsent/model/std_cells/LATQ.cc')
| -rw-r--r-- | ext/dsent/model/std_cells/LATQ.cc | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/ext/dsent/model/std_cells/LATQ.cc b/ext/dsent/model/std_cells/LATQ.cc new file mode 100644 index 000000000..b2548d07b --- /dev/null +++ b/ext/dsent/model/std_cells/LATQ.cc @@ -0,0 +1,380 @@ +#include "model/std_cells/LATQ.h" + +#include <cmath> + +#include "model/PortInfo.h" +#include "model/TransitionInfo.h" +#include "model/EventInfo.h" +#include "model/std_cells/StdCellLib.h" +#include "model/std_cells/CellMacros.h" +#include "model/timing_graph/ElectricalNet.h" +#include "model/timing_graph/ElectricalDriver.h" +#include "model/timing_graph/ElectricalLoad.h" +#include "model/timing_graph/ElectricalDelay.h" + +namespace DSENT +{ + using std::ceil; + using std::max; + using std::min; + + LATQ::LATQ(const String& instance_name_, const TechModel* tech_model_) + : StdCell(instance_name_, tech_model_) + { + initProperties(); + } + + LATQ::~LATQ() + {} + + void LATQ::initProperties() + { + return; + } + + void LATQ::constructModel() + { + // All constructModel should do is create Area/NDDPower/Energy Results as + // well as instantiate any sub-instances using only the hard parameters + + createInputPort("D"); + createInputPort("G"); + createOutputPort("Q"); + + createLoad("D_Cap"); + createLoad("G_Cap"); + createDelay("D_to_Q_delay"); + createDelay("G_to_Q_delay"); + createDriver("Q_Ron", true); + + ElectricalLoad* d_cap = getLoad("D_Cap"); + ElectricalLoad* g_cap = getLoad("G_Cap"); + ElectricalDelay* d_to_q_delay = getDelay("D_to_Q_delay"); + ElectricalDelay* g_to_q_delay = getDelay("G_to_Q_delay"); + ElectricalDriver* q_ron = getDriver("Q_Ron"); + + getNet("D")->addDownstreamNode(d_cap); + getNet("G")->addDownstreamNode(g_cap); + d_cap->addDownstreamNode(d_to_q_delay); + g_cap->addDownstreamNode(g_to_q_delay); + g_to_q_delay->addDownstreamNode(q_ron); + q_ron->addDownstreamNode(getNet("Q")); + + // Create Area result + // Create NDD Power result + createElectricalAtomicResults(); + // Create G Event Energy Result + createElectricalEventAtomicResult("G"); + // Create DFF Event Energy Result + createElectricalEventAtomicResult("LATD"); + createElectricalEventAtomicResult("LATQ"); + // Create Idle event for leakage + // G pin is assumed to be on all the time + //createElectricalEventAtomicResult("Idle"); + getEventInfo("Idle")->setStaticTransitionInfos(); + return; + } + + void LATQ::updateModel() + { + // Get parameters + double drive_strength = getDrivingStrength(); + Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache(); + + // Standard cell cache string + String cell_name = "LATQ_X" + (String) drive_strength; + + // Get timing parameters + getLoad("D_Cap")->setLoadCap(cache->get(cell_name + "->Cap->D")); + getLoad("G_Cap")->setLoadCap(cache->get(cell_name + "->Cap->G")); + getDriver("Q_Ron")->setOutputRes(cache->get(cell_name + "->DriveRes->Q")); + getDelay("G_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->G_to_Q")); + getDelay("D_to_Q_delay")->setDelay(cache->get(cell_name + "->Delay->D_to_Q")); + + // Set the cell area + getAreaResult("Active")->setValue(cache->get(cell_name + "->Area->Active")); + getAreaResult("Metal1Wire")->setValue(cache->get(cell_name + "->Area->Metal1Wire")); + + return; + } + + void LATQ::evaluateModel() + { + return; + } + + void LATQ::useModel() + { + // Get parameters + double drive_strength = getDrivingStrength(); + Map<double>* cache = getTechModel()->getStdCellLib()->getStdCellCache(); + + // Standard cell cache string + String cell_name = "LATQ_X" + (String) drive_strength; + + // Propagate the transition info and get P_D, P_M, and P_Q + propagateTransitionInfo(); + double P_D = getInputPort("D")->getTransitionInfo().getProbability1(); + double P_G = getInputPort("G")->getTransitionInfo().getProbability1(); + double P_Q = getOutputPort("Q")->getTransitionInfo().getProbability1(); + double G_num_trans_01 = getInputPort("G")->getTransitionInfo().getNumberTransitions01(); + double D_num_trans_01 = getInputPort("D")->getTransitionInfo().getNumberTransitions01(); + double Q_num_trans_01 = getOutputPort("Q")->getTransitionInfo().getNumberTransitions01(); + + // Calculate leakage + double leakage = 0; + leakage += cache->get(cell_name + "->Leakage->!D!G!Q") * (1 - P_D) * (1 - P_G) * (1 - P_Q); + leakage += cache->get(cell_name + "->Leakage->!D!GQ") * (1 - P_D) * (1 - P_G) * P_Q; + leakage += cache->get(cell_name + "->Leakage->!DG!Q") * (1 - P_D) * P_G * (1 - P_Q); + leakage += cache->get(cell_name + "->Leakage->D!G!Q") * P_D * (1 - P_G) * (1 - P_Q); + leakage += cache->get(cell_name + "->Leakage->D!GQ") * P_D * (1 - P_G) * P_Q; + leakage += cache->get(cell_name + "->Leakage->DGQ") * P_D * P_G * P_Q; + getNddPowerResult("Leakage")->setValue(leakage); + + // Get VDD + double vdd = getTechModel()->get("Vdd"); + + // Get capacitances + double g_b_cap = cache->get(cell_name + "->Cap->G_b"); + double d_b_cap = cache->get(cell_name + "->Cap->D_b"); + double q_i_cap = cache->get(cell_name + "->Cap->Q_i"); + double q_b_cap = cache->get(cell_name + "->Cap->Q_b"); + double q_cap = cache->get(cell_name + "->Cap->Q"); + double q_load_cap = getNet("Q")->getTotalDownstreamCap(); + + // Calculate G Event energy + double g_event_energy = 0.0; + g_event_energy += (g_b_cap) * G_num_trans_01; + g_event_energy *= vdd * vdd; + getEventResult("G")->setValue(g_event_energy); + // Calculate LATD Event energy + double latd_event_energy = 0.0; + latd_event_energy += (d_b_cap) * D_num_trans_01; + latd_event_energy *= vdd * vdd; + getEventResult("LATD")->setValue(latd_event_energy); + // Calculate LATQ Event energy + double latq_event_energy = 0.0; + latq_event_energy += (q_i_cap + q_b_cap + q_cap + q_load_cap) * Q_num_trans_01; + latq_event_energy *= vdd * vdd; + getEventResult("LATQ")->setValue(latq_event_energy); + + return; + } + + void LATQ::propagateTransitionInfo() + { + const TransitionInfo& trans_G = getInputPort("G")->getTransitionInfo(); + const TransitionInfo& trans_D = getInputPort("D")->getTransitionInfo(); + + double G_num_trans_01 = trans_G.getNumberTransitions01(); + double G_num_trans_10 = G_num_trans_01; + double G_num_trans_00 = trans_G.getNumberTransitions00(); + double D_freq_mult = trans_D.getFrequencyMultiplier(); + + // If the latch is sampling just as fast or faster than input data signal + // Then it can capture all transitions (though it should be normalized to clock) + if((G_num_trans_10 + G_num_trans_00) >= D_freq_mult) + { + const TransitionInfo& trans_Q = trans_D.scaleFrequencyMultiplier(G_num_trans_10 + G_num_trans_00); + getOutputPort("Q")->setTransitionInfo(trans_Q); + } + // If the latch is sampling slower than the input data signal, then input + // will look like they transition more + else + { + // Calculate scale ratio + double scale_ratio = (G_num_trans_10 + G_num_trans_00) / D_freq_mult; + // 00 and 11 transitions become fewer + double D_scaled_diff = 0.5 * (1 - scale_ratio) * (trans_D.getNumberTransitions00() + trans_D.getNumberTransitions11()); + double D_scaled_num_trans_00 = trans_D.getNumberTransitions00() * scale_ratio; + double D_scaled_num_trans_11 = trans_D.getNumberTransitions11() * scale_ratio; + // 01 and 10 transitions become more frequent + double D_scaled_num_trans_10 = trans_D.getNumberTransitions01() + D_scaled_diff; + + // Create final transition info, remembering to apply scaling ratio to normalize to G + const TransitionInfo trans_Q( D_scaled_num_trans_00 * scale_ratio, + D_scaled_num_trans_10 * scale_ratio, + D_scaled_num_trans_11 * scale_ratio); + getOutputPort("Q")->setTransitionInfo(trans_Q); + } + + return; + } + + // Creates the standard cell, characterizes and abstracts away the details + void LATQ::cacheStdCell(StdCellLib* cell_lib_, double drive_strength_) + { + // Get parameters + double gate_pitch = cell_lib_->getTechModel()->get("Gate->PitchContacted"); + Map<double>* cache = cell_lib_->getStdCellCache(); + + // Standard cell cache string + String cell_name = "LATQ_X" + (String) drive_strength_; + + Log::printLine("=== " + cell_name + " ==="); + + + // Now actually build the full standard cell model + createInputPort("D"); + createInputPort("G"); + createOutputPort("Q"); + + createNet("D_b"); + createNet("Q_i"); + createNet("Q_b"); + createNet("G_b"); + + // Adds macros + CellMacros::addInverter(this, "INV1", false, true, "D", "D_b"); + CellMacros::addInverter(this, "INV2", false, true, "Q_i", "Q_b"); + CellMacros::addInverter(this, "INV3", false, true, "Q_b", "Q"); + CellMacros::addInverter(this, "INV4", false, true, "G", "G_b"); + CellMacros::addTristate(this, "INVZ1", false, true, false, false, "D_b", "G", "G_b", "Q_i"); //trace timing through A->ZN path only + CellMacros::addTristate(this, "INVZ2", false, false, false, false, "Q_b", "G_b", "G", "Q_i"); //don't trace timing through the feedback path + + // Update macros + CellMacros::updateInverter(this, "INV1", drive_strength_ * 0.125); + CellMacros::updateInverter(this, "INV2", drive_strength_ * 0.5); + CellMacros::updateInverter(this, "INV3", drive_strength_ * 1.0); + CellMacros::updateInverter(this, "INV4", drive_strength_ * 0.125); + CellMacros::updateTristate(this, "INVZ1", drive_strength_ * 0.5); + CellMacros::updateTristate(this, "INVZ2", drive_strength_ * 0.0625); + + // Cache area result + double area = 0.0; + area += gate_pitch * getTotalHeight() * 1; + area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV1_GatePitches").toDouble(); + area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV2_GatePitches").toDouble(); + area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV3_GatePitches").toDouble(); + area += gate_pitch * getTotalHeight() * getGenProperties()->get("INV4_GatePitches").toDouble(); + area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ1_GatePitches").toDouble(); + area += gate_pitch * getTotalHeight() * getGenProperties()->get("INVZ2_GatePitches").toDouble(); + cache->set(cell_name + "->Area->Active", area); + cache->set(cell_name + "->Area->Metal1Wire", area); //Cover-block m1 area + Log::printLine(cell_name + "->Area->Active=" + (String) area); + Log::printLine(cell_name + "->Area->Metal1Wire=" + (String) area); + + // -------------------------------------------------------------------- + // Leakage Model Calculation + // -------------------------------------------------------------------- + // Cache leakage power results (for every single signal combination) + double leakage_000 = 0; //!D, !G, !Q + double leakage_001 = 0; //!D, !G, Q + double leakage_010 = 0; //!D, G, !Q + double leakage_100 = 0; //D, !G, !Q + double leakage_101 = 0; //D, !G, Q + double leakage_111 = 0; //D, G, Q + + //This is so painful... + leakage_000 += getGenProperties()->get("INV1_LeakagePower_0").toDouble(); + leakage_000 += getGenProperties()->get("INV2_LeakagePower_0").toDouble(); + leakage_000 += getGenProperties()->get("INV3_LeakagePower_1").toDouble(); + leakage_000 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); + leakage_000 += getGenProperties()->get("INVZ1_LeakagePower_011_0").toDouble(); + leakage_000 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble(); + + leakage_001 += getGenProperties()->get("INV1_LeakagePower_0").toDouble(); + leakage_001 += getGenProperties()->get("INV2_LeakagePower_0").toDouble(); + leakage_001 += getGenProperties()->get("INV3_LeakagePower_0").toDouble(); + leakage_001 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); + leakage_001 += getGenProperties()->get("INVZ1_LeakagePower_011_1").toDouble(); + leakage_001 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble(); + + leakage_010 += getGenProperties()->get("INV1_LeakagePower_0").toDouble(); + leakage_010 += getGenProperties()->get("INV2_LeakagePower_0").toDouble(); + leakage_010 += getGenProperties()->get("INV3_LeakagePower_1").toDouble(); + leakage_010 += getGenProperties()->get("INV4_LeakagePower_1").toDouble(); + leakage_010 += getGenProperties()->get("INVZ1_LeakagePower_101_0").toDouble(); + leakage_010 += getGenProperties()->get("INVZ2_LeakagePower_011_0").toDouble(); + + leakage_100 += getGenProperties()->get("INV1_LeakagePower_1").toDouble(); + leakage_100 += getGenProperties()->get("INV2_LeakagePower_1").toDouble(); + leakage_100 += getGenProperties()->get("INV3_LeakagePower_1").toDouble(); + leakage_100 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); + leakage_100 += getGenProperties()->get("INVZ1_LeakagePower_010_0").toDouble(); + leakage_100 += getGenProperties()->get("INVZ2_LeakagePower_101_0").toDouble(); + + leakage_101 += getGenProperties()->get("INV1_LeakagePower_1").toDouble(); + leakage_101 += getGenProperties()->get("INV2_LeakagePower_1").toDouble(); + leakage_101 += getGenProperties()->get("INV3_LeakagePower_0").toDouble(); + leakage_101 += getGenProperties()->get("INV4_LeakagePower_0").toDouble(); + leakage_101 += getGenProperties()->get("INVZ1_LeakagePower_010_1").toDouble(); + leakage_101 += getGenProperties()->get("INVZ2_LeakagePower_100_1").toDouble(); + + leakage_111 += getGenProperties()->get("INV1_LeakagePower_1").toDouble(); + leakage_111 += getGenProperties()->get("INV2_LeakagePower_1").toDouble(); + leakage_111 += getGenProperties()->get("INV3_LeakagePower_0").toDouble(); + leakage_111 += getGenProperties()->get("INV4_LeakagePower_1").toDouble(); + leakage_111 += getGenProperties()->get("INVZ1_LeakagePower_100_1").toDouble(); + leakage_111 += getGenProperties()->get("INVZ2_LeakagePower_010_1").toDouble(); + + cache->set(cell_name + "->Leakage->!D!G!Q", leakage_000); + cache->set(cell_name + "->Leakage->!D!GQ", leakage_001); + cache->set(cell_name + "->Leakage->!DG!Q", leakage_010); + cache->set(cell_name + "->Leakage->D!G!Q", leakage_100); + cache->set(cell_name + "->Leakage->D!GQ", leakage_101); + cache->set(cell_name + "->Leakage->DGQ", leakage_111); + Log::printLine(cell_name + "->Leakage->!D!G!Q=" + (String) leakage_000); + Log::printLine(cell_name + "->Leakage->!D!GQ=" + (String) leakage_001); + Log::printLine(cell_name + "->Leakage->!DG!Q=" + (String) leakage_010); + Log::printLine(cell_name + "->Leakage->D!G!Q=" + (String) leakage_100); + Log::printLine(cell_name + "->Leakage->D!GQ=" + (String) leakage_101); + Log::printLine(cell_name + "->Leakage->DGQ=" + (String) leakage_111); + // -------------------------------------------------------------------- + + // -------------------------------------------------------------------- + // Get Node Capacitances + // -------------------------------------------------------------------- + double d_cap = getNet("D")->getTotalDownstreamCap(); + double d_b_cap = getNet("D_b")->getTotalDownstreamCap(); + double q_i_cap = getNet("Q_i")->getTotalDownstreamCap(); + double q_b_cap = getNet("Q_b")->getTotalDownstreamCap(); + double q_cap = getNet("Q")->getTotalDownstreamCap(); + double g_cap = getNet("G")->getTotalDownstreamCap(); + double g_b_cap = getNet("G_b")->getTotalDownstreamCap(); + + cache->set(cell_name + "->Cap->D", d_cap); + cache->set(cell_name + "->Cap->D_b", d_b_cap); + cache->set(cell_name + "->Cap->Q_i", q_i_cap); + cache->set(cell_name + "->Cap->Q_b", q_b_cap); + cache->set(cell_name + "->Cap->Q", q_cap); + cache->set(cell_name + "->Cap->G", g_cap); + cache->set(cell_name + "->Cap->G_b", g_b_cap); + + Log::printLine(cell_name + "->Cap->D=" + (String) d_cap); + Log::printLine(cell_name + "->Cap->D_b=" + (String) d_b_cap); + Log::printLine(cell_name + "->Cap->Q_i=" + (String) q_i_cap); + Log::printLine(cell_name + "->Cap->Q_b=" + (String) q_b_cap); + Log::printLine(cell_name + "->Cap->Q=" + (String) q_cap); + Log::printLine(cell_name + "->Cap->G=" + (String) g_cap); + Log::printLine(cell_name + "->Cap->G_b=" + (String) g_b_cap); + // -------------------------------------------------------------------- + + // -------------------------------------------------------------------- + // Build Internal Delay Model + // -------------------------------------------------------------------- + double q_ron = getDriver("INV3_RonZN")->getOutputRes(); + + double d_to_q_delay = getDriver("INV1_RonZN")->calculateDelay() + + getDriver("INVZ1_RonZN")->calculateDelay() + + getDriver("INV2_RonZN")->calculateDelay() + + getDriver("INV3_RonZN")->calculateDelay(); + double g_to_q_delay = getDriver("INV4_RonZN")->calculateDelay() + + getDriver("INVZ1_RonZN")->calculateDelay() + + getDriver("INV2_RonZN")->calculateDelay() + + getDriver("INV3_RonZN")->calculateDelay(); + + cache->set(cell_name + "->DriveRes->Q", q_ron); + cache->set(cell_name + "->Delay->D_to_Q", d_to_q_delay); + cache->set(cell_name + "->Delay->G_to_Q", g_to_q_delay); + Log::printLine(cell_name + "->DriveRes->Q=" + (String) q_ron); + Log::printLine(cell_name + "->Delay->D_to_Q=" + (String) d_to_q_delay); + Log::printLine(cell_name + "->Delay->G_to_Q=" + (String) g_to_q_delay); + + return; + // -------------------------------------------------------------------- + + } + +} // namespace DSENT + |